/**
 * Preview Page Styles - 未解锁结果页/预览页样式
 * Task: T022
 */

/* ============================================
   Preview Page Layout
   ============================================ */
.preview-page {
  background-color: var(--color-bg-secondary);
}

.preview-page .page-content {
  padding: var(--spacing-xl) var(--spacing-lg);
}

/* ============================================
   Success Header
   ============================================ */
.preview-success-header {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.preview-success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.preview-success-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary-dark);
}

.preview-success-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.preview-success-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================
   Basic Result Card
   ============================================ */
.preview-result-card {
  background-color: white;
  border-radius: var(--radius-2xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  margin-bottom: var(--spacing-md);
}

.preview-result-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.preview-result-indicator {
  width: 6px;
  height: 16px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.preview-result-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.preview-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.preview-stat-item {
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  text-align: center;
}

.preview-stat-item-green {
  background-color: rgba(236, 253, 245, 0.5);
}

.preview-stat-item-blue {
  background-color: rgba(239, 246, 255, 0.5);
}

.preview-stat-label {
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
}

.preview-stat-item-green .preview-stat-label {
  color: var(--color-primary-dark);
}

.preview-stat-item-blue .preview-stat-label {
  color: #1D4ED8;
}

.preview-stat-value-wrapper {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--spacing-xs);
}

.preview-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-black);
}

.preview-stat-item-green .preview-stat-value {
  color: var(--color-primary-dark);
}

.preview-stat-item-blue .preview-stat-value {
  color: #1D4ED8;
}

.preview-stat-unit {
  font-size: var(--font-size-xs);
}

.preview-stat-item-green .preview-stat-unit {
  color: var(--color-primary-dark);
}

.preview-stat-item-blue .preview-stat-unit {
  color: #1D4ED8;
}

/* Masked stat value */
.preview-stat-value.masked {
  letter-spacing: 2px;
}

/* ============================================
   Info Alert
   ============================================ */
.preview-info-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--color-warning-light);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-md);
}

.preview-info-icon {
  color: var(--color-warning);
  flex-shrink: 0;
  margin-top: 2px;
}

.preview-info-text {
  font-size: 11px;
  color: #92400E;
  line-height: var(--line-height-relaxed);
  font-weight: var(--font-weight-medium);
}

/* ============================================
   Locked Section
   ============================================ */
.preview-locked-card {
  position: relative;
  background-color: white;
  border-radius: var(--radius-2xl);
  padding: var(--spacing-lg);
  padding-bottom: var(--spacing-xs);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.preview-locked-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.preview-locked-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.preview-locked-features {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-normal);
}

.preview-locked-features p {
  margin-bottom: 2px;
}

/* Locked action area */
.preview-locked-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-md) 0;
}

.preview-locked-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.preview-locked-action-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-normal);
}

/* Blurred preview list (legacy) */
.preview-locked-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.preview-locked-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.preview-locked-item:nth-child(1) { opacity: 0.4; }
.preview-locked-item:nth-child(2) { opacity: 0.3; }
.preview-locked-item:nth-child(3) { opacity: 0.2; }

.preview-locked-item-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.preview-locked-item-bar {
  height: 12px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
}

.preview-locked-item-bar-1 { width: 75%; }
.preview-locked-item-bar-2 { width: 50%; }
.preview-locked-item-bar-3 { width: 66%; }

/* Glass mask overlay */
.preview-locked-overlay {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  margin-top: calc(var(--spacing-sm) * -1);
  background: linear-gradient(180deg, rgba(255,255,255,0.5) 0%, rgba(255,255,255,1) 30%);
  min-height: 140px;
}

.preview-locked-overlay-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-sm);
  object-fit: contain;
}

.preview-locked-overlay-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-normal);
}

.preview-unlock-btn {
  background: linear-gradient(135deg, #1F2937 0%, #374151 100%);
  color: white;
  padding: var(--spacing-md) var(--spacing-2xl);
  border-radius: var(--radius-xl);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-base);
  box-shadow: 0 4px 14px rgba(31, 41, 55, 0.4);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 180px;
  position: relative;
  z-index: 10;
  margin-bottom: var(--spacing-sm);
}

.preview-unlock-btn:hover {
  background: linear-gradient(135deg, #374151 0%, #4B5563 100%);
  box-shadow: 0 6px 20px rgba(31, 41, 55, 0.5);
}

.preview-unlock-btn:active {
  transform: scale(0.98);
}

/* ============================================
   Warning Text
   ============================================ */
.preview-warning-text {
  text-align: center;
  margin-top: var(--spacing-lg);
  padding: 0 var(--spacing-sm);
}

.preview-warning-text p {
  font-size: 11px;
  color: #F87171;
  line-height: var(--line-height-tight);
}

/* ============================================
   Preview Footer
   ============================================ */
.preview-footer {
  height: var(--footer-height);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--spacing-lg);
  background-color: white;
  border-top: 1px solid var(--color-border);
}

.preview-footer-disclaimer {
  font-size: 10px;
  color: var(--color-text-muted);
  text-align: center;
}

/* ============================================
   Loading State (Generating)
   ============================================ */
.preview-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  text-align: center;
}

.preview-loading-spinner {
  width: 64px;
  height: 64px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-xl);
}

.preview-loading-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.preview-loading-subtext {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Progress dots animation */
.preview-loading-dots {
  display: inline-flex;
  gap: var(--spacing-xs);
  margin-left: var(--spacing-xs);
}

.preview-loading-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-primary);
  border-radius: 50%;
  animation: loading-dot 1.4s infinite ease-in-out both;
}

.preview-loading-dot:nth-child(1) { animation-delay: -0.32s; }
.preview-loading-dot:nth-child(2) { animation-delay: -0.16s; }
.preview-loading-dot:nth-child(3) { animation-delay: 0; }

@keyframes loading-dot {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Bottom spacer */
.preview-bottom-spacer {
  height: 32px;
}